Electrical indicator for street-cars.



R. M. CRAIG.

ELECTRICAL INDICATOR FOR STREET CA RS.

Patented May 2, 1916.

4 SIIEETS-SHEFET I.

APPLICATION FILED FEB. 1.1910.

R. M. CRAIG.

APPLICATION FILED FEB- 1, 910-.

Patented May 2, 1916.

4 SHEETS-SHEET 2.

awe/M04,

ELECTRICAL INDICATOR FOR STREET CARS.

R. M. CRAIG.

ELECTRICAL INDICATOR FOR STREET CARS.

APPLICATION FILED EEB- I. 1910.

Patented May 2,1916.

4 SHEETS-SHEET 3,

W M13. P

R. M. CRAIG.

' ELECTRICAL INDICATOR FOR STREET CARS. APPLICATION FILED FEB. 1, I910.

Patented May 2,1916.

4 SHEETS-SHEET 4.

THE COLUMBIA PLMjouRAPH co., WAsl-IINGTDN,"0.12,

7 To all whom it may concern:

proved indicator,

RICHARD M. CRAIG, orsan anroivro, TEXAS.

ELECTRICALINDICATOR FOR STREET-CABS.

Be it known that I, RICHARD M. CRAIG, a citizen of the United States, residing at San Antonio, in the .county of Bexar and State of Texas, have invented certain new and useful Improvements in Electrical Indicators for Street-Cars, of which the following is a specification.

My invention relates to that class of indicators designed to be mounted within a street car and to display to thepassengers the names of the streets passed by the car, the object of the invention being to provide a construction of this-nature, which is electrically operated at suitable distances along the route, as for instance, atfthe corner of each street, which is automatically reversed at the end of the route or any desired point, and which may be manually reversed when desired.

A further object is to provide a continuous, constantly moving. belt or carrier upon which the names of the streets are marked and which shall contain a set of advertisements, this belt having thereon two sets of street names and two sets of advertisements, one of which sets of street names and advertisements is displayed during the progress of other upon the return of the car toward its starting point.

. A still further object is to provide means for equalizing the unequal pull upon the winding spools upon which the belt is wound, caused by differences in thediameter of the two spools as the belt is wound from one to the other.

For a full understanding of the invention and the merits thereof, and to acquire a knowledge of the details of construction, reference is to be had to the following description and accompanying drawings, in which:

Figure 1 is a side elevation of my imthe casing inclosing the same being shown insection and certain parts of the indicator beingbroken away. Fig. 2 is a plan view thereof; Fig. 8 is a view of the forward end of the car, showing an indicator in place therein; Fig. 41: 1s a 1 fragmentary face view of the. traveling a face view showlng the trolley wheel and the contacts carried by the trolley; Fig. 7 1s a Specification of Letters Patent.

the car in one direction, and the side view of a-portion Patented May a, 1a1e.

Application filed February 1, 1910. Serial No. 541,307.

of the main conductor, the contacts carried thereby, and the trolley wheel; Fig. 8 is a' diagrammatic view showing the electrical connections; Fig. 9 is a detail view, showing a modified arrangement of contacts for a third rail system; Fig. 10 is a sectional. view of an underground conduit, showing a modified arrangement of contacts and trolley; Fig. 11 is a detail perspective view of the means for holding the shiftable transmission gearing in its proper position; Fig. 12 is a perspective View of the locking means for preventing any movement of the band. Fig. 13 is a perspective detail illustrating the arrangement and manner of op erating the opposed racks.

Corresponding and like parts are referred to in the following description and indi cated in all the views of the drawings by the same reference characters.

Referring to these figures, A designates a box or casing which is located in the end of the car and preferably located above the front platform, the inside end of the box or casing being cut away at A whereby the moving belt B may be seen. The moving belt B is divided into spaces containing the name of the street and advertising matter if desired, whichspaces, are each equal to the length of the opening B. Preferably,

the, belt is divided into two lateral por tions as Z) and b, as shown in Figs. 4: and 5, one of these portions, as b, being used when the car is going in one direction, and the other space I) being displayed when the car is going in the reverse direction or returning. The, advertising matter and the street names, as shown in Fig. 4, differ, for the reason that the display band as shown is adapted tobe used on a car whose return route differs from the outgoing route, but it will be understood that if the return route is the same as the outgoing route, then the lower half 1) of the band has the same street names, though it preferably has different advertisements, as for instance, the advertisements of merchants whose stores arelocated on the left side of the street, where upon going out, the band displayed advertisements relating to merchants on the right one half of the display band is exposed and the other half shielded, will'be. described later. l i

The band is provided upon its marginal edges with the perforations b? with which side ofthe street. The means whereby,

' gear 7 gears 5 which mesh with bevel gears 6 on the spindles of the actuating rolls. Thus a rotation of the shaft 4 will cause a rotation of the actuating rolls. For the purpose of driving'the shaft 4, I key thereon the bevel which engages with a bevel gear 8 upon the forward end of a shaft 9 which is supported in suitable bearings and which carries at its inner extremity the bevel gear 10. Extending transversely to the shaft 9 is the'shaft 11 which is slidingly supported in suitable bearings and has fast on it a barrel .12. This barrel carries upon it the two .opposed bev-elgears 13 13 which, as the barrel is shifted to one sideor the other, will respectively engage with the bevel gear 10. It will of course beobvious that when the bevel gear 13 is engaged with the gear 10, the shaft 9 will be revolved in one direction, and when engaged withthe gear 13, the shaft 9 revolves in the opposite direction. As before stated, the shaft 11 is transversely shiftable to move the barrel 12, and as a means for shifting the shaft 11 and the barshifting of the shaft 11,

rel, 'I connect the shaft 11 to a shipper arm 14 which carrles a pintle which has engagement with a reverslng lever15, this lever being slotted, as at 16 at its ment with the pintle. oted at 17 and its inner point of engage- The lever 15 is pivextremity is slotted,

as at 18, for engagement with a pin upon the core 19 of opposed solenoids 20 and 20 The electrical connections of these solenoids-will be later described, but it is suiiicient to say at this time that the lever 15 will be actuated in oneor the other direction by'the energizing of one or the other solenoid, and that this actuation will of course shift the clutch so as to bring one or the other of the gears 13 13 into engagement with the gearlO, and that thus. the rotation of the shaft 11 and clutch will be transmitted in one or the other direction to the shaft 9. As a means for normally holding the clutch in its adjusted position, I provide a pin 21 which is adapted to engage with either one of two grooves 22 which. eX- tend around the shaft 11. The finger 21 is resilient so that it willyield to permitzthe and at the same time by its engagement with a groove, hold the shaft in shifted position. The forward end of the lever 15 is provided with means for actuating a shutter for shielding one ,halfof the moving display belt or for displaying the other half of the belt; this shutter mechanism, however, will be later described. As a means for actuating the member 12 which not only forms a reversing gear, but also a transmitting gear, I provide the gear wheel 25 which is mounted upon a short shaft 26 and which engages with the periphery of the reversing gear cylinder 12. It will be noted that the gears 13 13 are connected to each other by the member 12 which has the form of a spool or cylinder. The space between the inner faces of the gears 13 and 13 is just sufficient to permit the reversing gear to shift from one side to the other but not to loose contact with the wheel 25.

Mounted upon the shaft 26 is a lever 27 carrying a pawl 28 which is adapted to engage with teeth 29 upon a movement of the lever inone direction and to ride over these teeth upon a movement in the other direction. A spring 30 acts to force the pawl into engagement with the teeth. It will be seen'that an upward movement of the lever engages the pawl with the teeth and acts to rotate the wheel 25, while upon a downward movement of the lever, the pawl is disengaged and no rotation takes place. As a means for actuating this step-by-step lever, I provide the solenoid 31 which is energized at predetermined intervals by the current from the line, and which when operated, draws downward upon the outer extremity of the lever against the force of the springs 32. As soon as the solenoid is deenergized, the springs will immediately act to move the lever upward and to thereby turn the wheel 25, the gear 12 and the shaft 9, thus feeding the display belt forward a certain predetermined distance.

Mounted upon the shaft 9 is an esca pement wheel 33 which has a notch in its circumference, as at 34. Partly movable with the actuating lever 27 is the escapement lever 35 which at its extremity has an inwardly turned detent tooth 36 which is adapted to engage in the notch 34. The rear extremity of the lever 35 is disposed beneath the level of the lever 27. The lever 27 is provided with a projecting arm 37 which is adapted to engage with the rear end of the lever 35 upon a downward movement of the lever 27. Thus, when the lever 27 has reached its lowermost position, it will have unlocked the shaft 9 so that upon an upward movement of the lever due to the springs 32, the shaft 9 will be rotated until the detent tooth 36 drops into the notch 34.

The moving display band B extends rearward from the actuating rollers 2 and over guide rollers 40 mounted in the casing in any suitable manner and of any desired character. At the rear end of the casing are supportedthe opposed winding reels 41 over which theband B passes.

These winding drums are provided'with springs whereby a tension may be kept upon the display band so that the dismovable from the shaft so that the display band maybe changed whenever desired. This shaft 42 is supported movably in sockets 42 and 42*, the socket 42 being provided with a-latch41 which acts to hold the shaft in position in the socket, but will permit its removal. The latch 41is pivoted in the socket 42 so as to be turned up to permit the insertion ofthe shaft through an opening in the socket and then may be turned down to hold the shaft in place. It is obvious that any other arrangement which permits the removal of the shaft 42 might be provided.

It is evident that where springs or similar arrangements are used to keep the spools containing the display belt or band constantly under tension, when one spool is nearly empty, the diameter of the opposed spool is much greater than the empty spool, and the pullupon the band is therefore unequal. In order to obviate this difficulty, I provide each of the shafts 42 with the pinion 43 which is engaged by a gear -wheel 44 which is loose upon its shaft.

The shaft 45 upon which this gear wheel is mounted, carries upon it the sprocket wheel 46, and attached atone end to the sprocket wheel or shaft and at its other end to the gear wheel 44 is the spiral spring 47 Each of the gear wheels 44, the shafts 45, the sprockets 46 and the springs 47 are alike, except for thefact that the springs are coiled in opposite directions upon opposed gear wheels so that they tend to turn in opposite directions. Passing over both of the sprocket wheels 46 is a sprocket band or chain 48. The ends of this chain are attached to arms 49 projecting from a longi tudinally shiftable rod 50. These arms 49 are adjustable upon the rod, and the ends of the sprocket band are adjustable upon the arms. The rod 50 is preferably formed in two parts or sections, the two sections being" held together by a sleeve 51 having set screws for engaging the two sections of the rod. This is to provide for an increase or decrease in the length of the rod, so that the rod may be adjusted to various circumstances. The rod 50 passes through bear-' ings 52 in which it has sliding engagement, and the extremities of'the rod are provided with the rollers 53 which are adapted to contact with the roll of the'display belt as it is wound upupon the reels.

It will be obvious that with the construction above described, as the amount of belt grows smaller upon one reel, it will grow larger upon the other reel, and that the rod 50 will shift transversely and will move the sprocket band 48 which will thereby unwind one of the springs and wind the other tighter.

" As shown in Fig. 4 and previously described, the display belt has twosets of street names and advertisements, one lo cated above the other upon the belt, and hence it is necessary to uncover one half the belt when the car is running in one direction, and to uncover the other half of the belt when the car is running in the reverse direction. For this purpose, I have provided the shutter 60. This shutter, at its opposite ends, is slidably mounted in guides 61, and the rear face of the shutter is provided with the racks 62, these racks engaging with worm gears 63, each mounted on a shaft 64. These shafts are connected by a transverse shaft having bevel gears 66. One of the shafts 64 is driven by a gear wheel 67 which has engagement with a larger gear wheel 68 whose shaft carriesand shaft 64. It will be noted that these gears are multiplying gears, and hence a comparatively slight motion of the pinion 69 will cause a considerable motion'of the worm shaft 64, this movement being such that the shutter 60 is raised from its lowermost position to its uppermost, or vice versa. The rack 70 being attachedto the reversing lever 15, it will be obvious that the shutter will be shifted at the time that the display band is reversed so that automatically, when the car reaches the end of its route in one direction, the lever 15 will be shifted, shifting thedriving gear so as to reverse the display band, and at the same time shifting the shutter to expose the other portion of the band.

Mounted behind the band (which is made preferably of some translucent material) is the casing containing a lamp of any desired character, as for instance, an electric light, and provided with a shaft 76 passing through it, which carries upon it a multicolored shade, this shade being-adapted to be rotated about the lamp so that the various colored lights may be thrown upon the exposed portion of the display belt. This rotatable shade may be driven by any suitable means, and I have shown it as driven by a shaft 77 and bevel gear wheelsfrom the'transverse shaft 4. It will of course be obvious that this illuminatinglantern maybe dispensed with, if desired. J

. Carried within the casing A in any convenient position is a switch box or casing 80 which is preferably made of asbestos or lined with the same, and which contains therein theswitches 81,82, 83 and 84. The switches81 and 82 are normally opened, while the switches 83 and 84 are normally closed. The switches 81 and 82 are arranged'in circuit with the opposed solenoid coils 20 and 20 while the normally closed switches 83 and 84 are arranged in circuit with the actuating solenoid 31 so that the circuit to the solenoid is normally closed. This invention contemplates the provision of means attached to the trolley wire or other conductor and located at the corners of the streets, whereby current may be supplied to the solenoid 31 or to the opposed reversing solenoids 20 and 20 and to this end, as shown in Fig. 6, I provide the trolley wire support with adjacent separated contacts and provide contact wheels which .are attached to the'trolley arm and which are designed to have rolling engagement with the contacts when the street corner is reached, thereby permitting the current to flow from the trolley wire through the contact Wheels and down through the several circuits. One form of this mechanism, de-

signed for use with overhead wires, is shown in Fig. 6, wherein 90 designates a trolley wire which is supported in any usual manner and which has attached to it the transversely extending yoke 91 of conducting material. The extremities of the yoke are attached to guy wires or other supporting devices from which they are insulated, and this transverse yoke 91 is provided upon one side of the trolley wire, preferably the right side, with the short contact strips or rails '93 and 94. The trolley pole 95 carries the usual trolley harp at its upper end, within which is supported the trolley wheel 96, and adjustably supported upon the side of 'the harp is the bracket 97 in which the rollers 98 and 99 are rotatably supported. These rollers are adapted to contact with .the strips or rails 93 and 94, and brushes 100 carry the current from the rolls or wheels .98 and 99 to the two conducting the car. -;It will thus be seen that every time the wheels 98 and 99 engage the rails or strips 93 or 94 (as 'for instance, at the corner of a street), current will pass down the wires X and Y, through the normally closed switches 83-84, through the wires X and Y, through thesolenoid 31 and to the ground, solenoid 31 will be energized and will draw down upon the lever 27. As soon as the wheels 98 and 99 have passed the contact strips 93 and 94, the current will of course be broken, the solenoid will be come deenergized, and the springs 32 will act to draw the lever 27 upward, thus moving the belt through one space. This action will occur at every corner, so that at each street corner the band will be moved forward one space to display the name of the street at which the car has arrived.

For the purpose of automatically actuating the reversin devices, I connect to the wires X and at any point above the switches 83-84, the wires U and V. These wires extend to the terminals of the normally open switches 82 and 81, these switches being held open by the springs 80 and 81 The movable switch members are connected by conducting wires S and T to the opposed solenoids 20 and 20. It will thus be obvious that when either one of the switches 82 or 81 is closed, current will pass from the wheels 98 or 99 and through one or the other of the solenoids 20 or 20, thus shifting the reversing lever 15 and reversing the movement of the display band. \Vhich of these switches shall be closed in order that current may pass, depends upon the energizing of magnets 104, 105. These magnets are connected in circuit with contact fingers 106 and 107 provided with rollers adapted to contact with a metallic roll 108 which is connected in circuit with a battery 109 and with each of the magnets. Thus when one or the other of the contact fingers 106 or 107 engages with this metallic roll, current will pass, and one or the other of the magnets 104 and 105 will be energized, thus closing one or the other of the switches and energizing one or the other of the solenoids 20 or 20*. The display belt or band B is provided upon one margin, as before stated, with two lines of approximately parallel slits 110 and 111, these slits being so disposed as to aline with the contact fingers 106 and 107. As the belt reaches the end of its movement in one direction, a slit, either 110 or 111 will come beneath the respective finger 106 or 107, contact will be made with the roll 108, and the circuit will be closed through one or the other of the magnets 104 or 105, thus closing one of the switches and energizing one or the other of the solenoids. It will be obvious that one end of the band or belt B will be formed with the slit 110, while the other end of the hand will be formed with the the contact wires lead to the wound up upon the other.

slit 111. It will as be obvious that these slits might even be placed in the middle portion of the band, .if so desired to reverse the mechanism for any reason. The contact fingers 106 and 107 preferably take the form of leaf springs which have mounted on their extremitiesrollers 106 and 107 these springs being attached to any suitable support having binding screws from which magnets 10 1 and 105. r I

The operation of my invention, so far as described, will be obvious. The solenoid 31 is normally deenergized, but when the car reaches the street corner and the contact shoes or wheels 98 and 99 engage with the contact strips 92 and 941, the solenoid will be energized, drawing down upon the lever, and as soon as the contact shoes or wheels have passed from the strips 93 and 9 1, the solenoid will be denergized, whereby the springs will operate the actuating lever to move the display band forward one space, thus announcing the next street. This will continue until the car reaches its terminus, at which time the belt or band will be en tirely unwound from one of the rollers and As the car reaches its terminus, the reversing strip will .come in contact with one of the brushes 106 or 107 and the belt or band will be reversed, as previously described. At the same time that the band is reversed, the shutter will be moved from a position'covering one half of the opening A in the casing, to a position covering the other half of the opening.

While I have shown the shutter as of such size as to cover one half of the belt or band and one halfthe advertisements thereon, it will be understood-that the shutter might be very much narrower than this and simply cover the name of the street so that when moved into-one position itwill cover the name of one street, and in a reverse position cover the name of the reverse. street, while the advertising matter located in the middle of the band, would remain the same.

While I have described and shown my system as applied to atrolley ear taking its power from an overhead wire, I wish it to be distinctly understood that precisely the same system could be applied in cases where the power was taken from either an underground conductor or from a third rail. Thus in Fig. 9 I show power as taken from a third rail, and in this figure,'130 is the third rail, and 131 and 132 are contact strips or short rails entirely analogous to the strips 93 and 94: and are supported upon a bracket 133 extending outfrom the third rail. 1 The trolley arm 13 1 carries upon it any suit able shoe or wheel engaging with the third rail, and also carries upon it thecontact wheels or brushes 135 which operate in ex- "actly the same manner as the brushes 98' and 99. In Fig. 10, 1 show the manner of arranging these contacts in an underground trolley system. In this figure 140. designates the conduit through which the conductors pass; 141 designates the conducting wires; 12 the trolley shoes or wheels; 148 two pairs of brushes or rollers of the same character as the brushes 98 and 99, and 1 15 designates brackets projecting upward and supporting the conducting strips 146 which are the same as the brushes 93 and 9 1, these conducting strips being of course in connectionwith the conductors i.

convenient form of switches 150, 151, 152,

and 153, one being to cut out the current of the operating mechanism, another for closing the circuit to the main solenoid, so as to operate the actuating lever when it is de* sired to take up tape or for any other reason. Two others of the switches are to close the circuits which operate the reversing solenoids.

It is to be understood that in the details of construction, my device'may have any desired form or arrangement, and that I do not wish to be limited to any of the details shown inasmuch as it will be obvious that the device might be modified in many ways does not detract from the appearance of the car, and places the indicator in such position that it may be very conveniently seen. The indicator is adapted not only to the ordinary surface lines of trolleys, but also to underground systems, third rail systems, etc. The indicator works equally well on a diverse route or a route in whichthe car returns along the same streets. The movablebelt carries upon it a continuous and consequently continually varying set of advertisements which are calculated to attract attention and are of course profitablel Since there are two sets of names and advertisements displayed upon the belt, one for going and one for coming, there is twice as much advertising space, and advertising space for competitors located at opposite corners of the street may be sold to better advantage. The belt or band is self-reversing, and there fore the belt or band does not run off at the end of the spools, or tear out. The mechanism is automatically reversed before the band can possibly be unwound from the spool. The belt or band being operated not by an independent motor and not by mechanism actuated through the movement of the car, but by devices located at the corners of the streets, there will be no difiiculty with inaccurate running. Where the indicator is operated through the rotation of the car wheels or devices propelled thereby, there is always considerable chance of inaccuracy, for the reason that the car, when leaving the shed, may be switched or shifted several times and may also, in the course. of its travel, have to be run back for some distance, thus entirely throwing out the indicator mechanism. It will be entirely obvious that nothing of this kind can occur with my improved indicator. It will also be observed that the indicator is operated electrically and not mechanically. Hence the car may be moved at a rapid rate of speed, and yet the indicator will be operated without any danger of breaking'the parts. In this connection also it may be stated that the solenoid draws down the actuating lever very quickly as soon as the contact has been made with the contact strip, but the belt or band is moved by the springs 32, and hence there is no jar or shock to the belt, such as would be the case were its movement secured upon an energizing of the solenoid. Any sudden or quick actuation of the belt would tend to tear it or otherwise damage it. It will be seen that by reason of the tension mechanism, the belt will always be kept in a perfectly taut condition, and yet not undersuch tension as would cause it to break, and that this tension will be released as the belt or band passes from one pulley to the other. The belt moves laterally or transversely of the car, and hence permits the mechanism to be placed in a relatively small space over the motormans head on the outside of the car. Thus it does not obstruct the inside of the car.

One other advantage incident to my construction is that the streets Whose names are displayed uponthe indicator belt or band may each bear a number, and the, cars be pro vided with cards placed on the backs of the seats, or like positions, and bearing similar numbers, and thus strangers can find the location of the streets and determine very easily how far ofi their street is. As remarked, the belt being displayed in two.

before sections, one for going and one for coming, the advertisements of firms on one side of the'street may be placed upon one portion of the belt to be displayed while the car is going from the barn, and the other set of advertisements for firms on the opposite side of the street may be placed on that section of the band which is displayed during the return trip, thus creating very keen competition and rivalry in advertising between com.-

petitors located on opposite sides of the same street.

Having described the invention, what I claim is 1. In an indicator for moving vehicles, a movable band having thereon two sets of street names, driving mechanism for moving the band in either direction, a reversing lever operatively connected to the driving mechanism to reverse the direction of movement thereof when the lever is shifted, means controlled by the band for operating said reversing lever, a shutter shiftable transversely across the band and adapted to conceal one or the other set of street names, a shaft having a worm gear engaging said shutter to shift it, a pinion operatively engaged with said shaft to drive it, and a rack bar mounted on the reversing lever and engaging said pinion to rotate the latter and move the shutter as the reversing lever is shifted.

2. In an indicator for moving vehicles, opposed driving rollers, a band passing over said driving rollers and having street names thereon, means for driving said rollers, guides for the band, opposed reels to which the ends of the band are attached, a gear wheel engaging with each reel and operating to rotate the'same to wind up the band, a spring attached to each of said gears and actlng to rotate it in the direction before mentioned, and means contacting with the face of the band as it is wound on the reels and movable inward or outward toward or from the axis of the reels as the band is wound from or on to the reels for increasing the tension of one of said springs and decreasing the tension of the other of said springs as the band is wound upon one of the reels and unwound from the other.

3. In a street indicator for moving vehicles, opposed driving rolls, means for driving said rolls, a band passing over said rolls and having advertising matter thereon, means for reversing the movement of said driving rolls, opposed reels upon which the ends of the band are mounted, gear wheels, one for each of said reels, engaging the same, springs for rotating said gear Wheels in a direction to wind up the reels, a transversely shiftable rod adapted to contact with the band on the reels and travel laterally as the band increases or decreases upon one or the other of the reels, rotatable members to which the inner ends of said springs are connected, and means connected to said shiftable rod for moving said rotatable members to lessen the tension on one of the springs and increase the tension on the other.

4. In an indicator for street cars, opposed driving rolls, means for rotating said rolls and reversing the rotation thereof, a band passingover said rolls; andv having advertising matterupon its face, opposed reels upon which the ends of the bandare wound, opposed gear wheels for driving said reels,

a. coil spring foreach of said gear wheels, the spring of one reel being "reversely wound to the spring of the other,a rotatable member for each of said gear wheels, to which the inner ends of the springs are connected, a follower bearing against {the surface of the band as it is wound upon 1 the opposite reels and shiftable transversely as one reel empties and the other fills, and

a connection between said follower and said gaged, shafts supporting said reels, a gear wheel on each" shaft, a gear wheel meshing with said first named gear wheel, a shaft supporting the same, a rotatable sprocket member on the shaft last named, a spring attached at one end to each of said gear Wheels and at its other to said sprocket member, a sprocket chain passing over said sprocket members, a laterally shiftable follower mounted between the reels and adapted to be engaged by the band wound thereon, and means for moving said sprocket chain upon the lateral shifting of the follower.

6. In an indicator for moving vehicles, opposed driving rolls, a band passing over said rolls, a shaft operatively engaged with said rolls for driving the same, a driving mechanism for said shaft, means for operating the driving mechanism at predetermined intervals, reversing gearing disposed between said driving mechanism and the roll-operating shaft and shiftable in opposite directions to reverse the movement of the roll-operating shaft, a reversing lever engaged with said reversing gearing, solenoids disposed on opposite sides of the reversing lever, contact members, one for each solenoid and connected in circuit therewith, a contact member disposed in proximity to the first named contact members, the said band passing between said first named contact members and the second named contact member and separating the same, said band being provided with openings at its extremities adapted to aline with said contact members in the course of travel of the band and permitting the contact members to electrically engage with each other and thus actuate one or the other of the solenoids to shift the reversing lever in one or the other direction when. the vehicle reaches one or the other terminus of its route.

7. In a street indicator for moving vehicles, opposed driving rolls, a band pass-- ing over said rolls and having thereon a series of street names, a driving shaft en gaging said rolls to drive the same, a transversely shiftable rotatable member having at opposite ends thereof gears forengaging said driving shaft to rotate the same in one or the other direction, a rotatable gear engaging with said shiftable member, a lever,

a pawl on the lever engaging with said gear upon an upward -movement of the lever,

sets of street names thereon,located out of alinement with each other, a driving shaft operatively connected at one end to said rolls to drive the same, the other end of said shaft being provided with a gear, a sliding rotatable member mounted adjacent to the second named extremity of the shaft and having gears thereon each adapted to engage with the gear on the shaft mechanism for intermittently rotating said member at predetermined intervals, a lever for shifting said rotatable member to reverse the movement of said driving shaft, means for moving said lever in one or the other direction at the termini of the route traversed by the vehicle, a shutter shiftable across the face of said band to conceal one of said sets of street names and disclose the other, and mechanism operated by said reversing lever for shifting said shutter.

9. In an indicator for moving vehicles, opposed driving rolls, a band passing over said driving rolls, said band having two sets of street names thereon, located out of alinement with each other, a driving shaft operatively connected at one end to said rolls to drive the same, the other end of said shaft being provided with a bevel gear, a sliding rotatable member mounted adjacent to the extremity of the shaft and having bevel gears thereon each adapted to engage with the bevel gear on the shaft mechanism for intermittently rotating said member at predetermined intervals, a lever for shifting said rotatable member to reverse the movement of said driving shaft, means for moving said lever in one or the other direction at the termini of the route traversed by the vehicle, a shutter shiftable across the face of said band to conceal one of said sets of street names and disclose the other, said shutter being provided with racks, a rotatable shaft having means thereon engaging with saidracks for shifting the shutter, a.

rack mountedon the extremity of the. reversing 1 lever, and multiplying gears between said. last named rack and the means engaging With the shutter racks whereby the racks shall be operated upon a movement of said lever.

10. In an indicator for moving vehicles, opposed driving rol1s,'a band passing over said rolls, a driving shaft operatively connected at one end to said rolls to drive the same, the other end of said shaft being provided with a bevel gear, said shaft being also provided With a notched locking disk,

a sliding rotatable member located adjacent copies of this'patent may be obtained for five cents each, by addressing the table member to drive the latter from the former, a transversely movable lever connected to said rotatable member and adapted to shift it in one direction or the other to reverse the movement of the driving shaft, resilient means for holding the rotatable member in its shifted position but yielding to permit the member to be shifted, and a locking lev'er having a detent at one end engaging in the notched disk on the driving shaft, the other end of said lever being located in such position as to be engaged by the driving lever when the latter is moved by the solenoid.

In testimony whereof I affix my signature in presence of two witnesses.

RICHARD M. CRAIG. [L.S.]

Witnesses:

VVALDEMAR ZsoHAoH, MAX L. BAYHA.

Commissioner of Patents.

Washington, D. G. 

